The enzyme _______ is the active form of a precursor secreted by the _______, where it begins the digestion of _______.

Question

Quizplus · Accepted Answer

Pepsin is the enzyme that begins the digestion of proteins and is secreted by the stomach in its inactive form pepsinogen. When pepsinogen comes into contact with the acidic environment of the stomach, it is converted to pepsin, which can then begin breaking down proteins. Trypsin is another enzyme that digests proteins, but it is secreted by the pancreas into the small intestine, not the stomach. Nucleic acids are digested by enzymes called nucleases, not pepsin or trypsin.

The Enzyme _______ Is the Active Form of a Precursor